Ultraviolet light writing system

Abstract

An ultraviolet light emitting diode flashlight is contained within a housing having a pen tip extending from the housing and an ink or dye reservoir in fluid communication with the pen tip. The ultraviolet light emitting diode flashlight within the housing emits light capable of inducing fluorescence in the ink or dye. A switch assembly completes an electrical circuit between a light emitting diode and a battery to activate the flashlight. A writing system package includes at least two of: a neon or pastel colored writing surface, a security pen having an ink or dye that fluoresces in the visible portion of the light spectrum upon exposure to ultraviolet light, and an ultraviolet light emitting diode flashlight.

Description

FIELD OF THE INVENTIONThe present invention in general relates to a writing system, and in particular to a writing system containing an ink or dye that fluoresces in the visible portion of the light spectrum upon exposure to ultraviolet light.BACKGROUND OF THE INVENTIONInvisible inks are part of the ancient science of steganography where hidden messages cannot be read by anyone other than the intended recipient, but also that no one else knows the message is even being sent. Invisible ink has been used since ancient times to produce steganographic writings. A variety of invisible ink substances have been known for centuries with varying success, including fruit juices and cobalt salts that could be developed and detected through heat or light. While invisible ink has largely been replaced as an espionage tool by cryptography, these materials are still used for security marking and amusement.It is still the case, just as in ancient times, that writing with invisible ink involves an i...

AI Technical Summary

Benefits of technology

"The patent describes a pen-light that includes a housing with a fluorescing ink or dye reservoir. The pen tip is in fluid communication with the reservoir. The pen-light also has a light emitting diode (LED) that emits light with a wavelength of less than 405 nanometers. The LED is connected to a battery within the housing. The patent also mentions the use of a writing system that includes a neon or pastel colored writing surface, a security pen containing the fluorescing ink or dye, and a light emitting diode flashlight containing an ultraviolet LED. The flashlight can be linked to the security pen. The technical effect of this patent is to provide a unique and secure writing system that includes a fluorescing ink or dye and a light emitting diode flashlight that can be easily linked to a security pen."

Problems solved by technology

This separation is inconvenient during writing as intermediate visualization of the writing is impractical and there is a tendency to lose either the writing instrument or the visualization equipment.

While a conventional security pen affords all the convenience of a visible writing instrument, ultraviolet and black light sources have remained inconveniently large to carry in conjunction of a conventional security marker.

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